Billiard ball rack



FIG. 1 is a perspective view of the billiard ball rack;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a first side elevational view thereof;

FIG. 5 is a second side elevational view thereof;

FIG. 6 is a side elevational view of a corner thereof, the undisclosed corners being identical in appearance; and,

FIG. 7 is a third side elevational view thereof. 

The ornamental design for billiard ball rack, as shown and described. 